> So maybe don't be proscriptive, but show people who are deploying from scratch, and maybe those that have never even used AWS, how to do that, and what the (I shudder to say the word) "best practice" workflow for using Dockerfiles and Dockerhub might be, with all of these components used in concert.

I think you nailed it.

ps. Haha, I actually just did a screencast series on Ansbile! Didn't know you were on HN. Thank you -- it's been really fun to work with ;) The Ansible docs are some of the best I have ever seen, and I commented on that heavily, makes it a real joy to have clear examples.